180348domain: NAppears in sequencesA019309(n)/4 for n >= 1.at n=9A094547Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (0, 0, 1), (1, -1, 1), (1, 1, -1)}.at n=11A148460a(n) = n*(2*n + 1)*(4*n + 1).at n=28A316224